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The Sankara School of Vedānta [CH. mind. As such, it is as changeable as is any other object. “I know this" only means that there is a revelation which at one sweep reveals both the "this" and the “1." So far as the revelation appears as revealing the “this” and the “I,” it is manifested in a subjective mental state having a particular conscious centre different from other similar centres. But, since revelation cannot in reality be individuated, all that we may say about “I” or "mine," "thou” or “thine,"falls outside it. They are all contents, having some indefinite existence of their own and revealed by this principle of revelation under certain conditions. This principle of revelation thus has a reality in quite a different sense from that which is used to designate the existence of any other object. All other objects are dependent upon this principle of revelation for their manifestation, and their nature or essence, out of connection with it, cannot be defined or described. They are not self-evident, but are only expressed by coming into some sort of relation with this principle. We have already seen that this principle cannot be either subjective or objective. For all considerations of subject or object fall outside it and do not in any way qualify it, but are only revealed by it. There are thus two principles, the principle of revelation and all that which is revealed by it. The principle of revelation is one; for there is nothing else like it; it alone is real in the highest and truest sense. It is absolute in the sense that there is no growth, decay, evolution or change in it, and it is perfectly complete in itself. It is infinite in the sense that no finitude can form part of it, though through it all finitude is being constantly revealed. It is all-pervading in the sense that no spatial or temporal limits can be said to affect it in any way, though all these are being constantly revealed by it. It is neither in my head nor in my body nor in the space before me; but yet there is nowhere that it is not. It has sometimes been designated as the "Self" or ātman, but only in the sense of denoting its nature as the supreme essence and transcendent reality of all — the Brahman.
Apart from this principle of revelation, all else is constituted of a substanceless indefinable stuff called māyā. In some schools of Sankara Vedānta it is said that all is pure and simple illusion, that things exist only when they are perceived and dissolve into nothingness as soon as we cease to perceive them; this school has been designated the Drsți-syşti school, a doctrine which has been